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<title>lwres_config</title>
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="refentry" lang="en">
<a name="id2476275"></a><div class="titlepage"></div>
<div class="refnamediv">
<h2>Name</h2>
<p>lwres_conf_init, lwres_conf_clear, lwres_conf_parse, lwres_conf_print, lwres_conf_get &#8212; lightweight resolver configuration</p>
</div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="funcsynopsis">
<pre class="funcsynopsisinfo">#include &lt;lwres/lwres.h&gt;</pre>
<table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" style="padding-bottom: 1em"><tr>
<td><code class="funcdef">
void
<b class="fsfunc">lwres_conf_init</b>(</code></td>
<td>lwres_context_t *�</td>
<td>
<var class="pdparam">ctx</var><code>)</code>;</td>
</tr></table>
<table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" style="padding-bottom: 1em"><tr>
<td><code class="funcdef">
void
<b class="fsfunc">lwres_conf_clear</b>(</code></td>
<td>lwres_context_t *�</td>
<td>
<var class="pdparam">ctx</var><code>)</code>;</td>
</tr></table>
<table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" style="padding-bottom: 1em">
<tr>
<td><code class="funcdef">
lwres_result_t
<b class="fsfunc">lwres_conf_parse</b>(</code></td>
<td>lwres_context_t *�</td>
<td>
<var class="pdparam">ctx</var>, </td>
</tr>
<tr>
<td>�</td>
<td>const char *�</td>
<td>
<var class="pdparam">filename</var><code>)</code>;</td>
</tr>
</table>
<table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" style="padding-bottom: 1em">
<tr>
<td><code class="funcdef">
lwres_result_t
<b class="fsfunc">lwres_conf_print</b>(</code></td>
<td>lwres_context_t *�</td>
<td>
<var class="pdparam">ctx</var>, </td>
</tr>
<tr>
<td>�</td>
<td>FILE *�</td>
<td>
<var class="pdparam">fp</var><code>)</code>;</td>
</tr>
</table>
<table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr>
<td><code class="funcdef">
lwres_conf_t *
<b class="fsfunc">lwres_conf_get</b>(</code></td>
<td>lwres_context_t *�</td>
<td>
<var class="pdparam">ctx</var><code>)</code>;</td>
</tr></table>
</div>
</div>
<div class="refsect1" lang="en">
<a name="id2543441"></a><h2>DESCRIPTION</h2>
<p><code class="function">lwres_conf_init()</code>
      creates an empty
      <span class="type">lwres_conf_t</span>
      structure for lightweight resolver context
      <em class="parameter"><code>ctx</code></em>.
    </p>
<p><code class="function">lwres_conf_clear()</code>
      frees up all the internal memory used by
      that
      <span class="type">lwres_conf_t</span>
      structure in resolver context
      <em class="parameter"><code>ctx</code></em>.
    </p>
<p><code class="function">lwres_conf_parse()</code>
      opens the file
      <em class="parameter"><code>filename</code></em>
      and parses it to initialise the resolver context
      <em class="parameter"><code>ctx</code></em>'s
      <span class="type">lwres_conf_t</span>
      structure.
    </p>
<p><code class="function">lwres_conf_print()</code>
      prints the
      <span class="type">lwres_conf_t</span>
      structure for resolver context
      <em class="parameter"><code>ctx</code></em>
      to the
      <span class="type">FILE</span>
      <em class="parameter"><code>fp</code></em>.
    </p>
</div>
<div class="refsect1" lang="en">
<a name="id2543508"></a><h2>RETURN VALUES</h2>
<p><code class="function">lwres_conf_parse()</code>
      returns <span class="errorcode">LWRES_R_SUCCESS</span>
      if it successfully read and parsed
      <em class="parameter"><code>filename</code></em>.
      It returns <span class="errorcode">LWRES_R_FAILURE</span>
      if <em class="parameter"><code>filename</code></em>
      could not be opened or contained incorrect
      resolver statements.
    </p>
<p><code class="function">lwres_conf_print()</code>
      returns <span class="errorcode">LWRES_R_SUCCESS</span>
      unless an error occurred when converting the network addresses to a
      numeric host address string.
      If this happens, the function returns
      <span class="errorcode">LWRES_R_FAILURE</span>.
    </p>
</div>
<div class="refsect1" lang="en">
<a name="id2543545"></a><h2>SEE ALSO</h2>
<p><span class="citerefentry"><span class="refentrytitle">stdio</span>(3)</span>,
      <span class="citerefentry"><span class="refentrytitle">resolver</span>(5)</span>.
    </p>
</div>
<div class="refsect1" lang="en">
<a name="id2543571"></a><h2>FILES</h2>
<p><code class="filename">/etc/resolv.conf</code>
    </p>
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